SRIRAM S NATHAN (M.D.) – Advanced Heart Failure and Transplant Cardiology Physician, NPI 1285602607
Advanced Heart Failure and Transplant Cardiology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
2,430 CARDIOVASCULAR DISEASE (CARDIOLOGY) in TX
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Provider Addresses for SRIRAM S NATHAN (M.D.)
Memorial Hermann Medical Plaza, 6400, Fannin Street, Texas Medical Center, Houston, Harris County, Texas, 77030, United States
SUITE 2350
HOUSTON, TX 770301521
Phone: (713) 704-4300
Fax: (713) 704-4355
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 18 Open Payments records for all available years, with a total value of $1,497.
Total Amount is formed as General ($1,497) + Research ($0) + Ownership ($0) = $1,497.
Last reported payment date: 2024-11-19 • Largest payer in this snapshot: Abbott Laboratories ($738).
Total Amount
$1,497
General + Research + Ownership
Payments
18
Total payment records
General Amount
$1,497
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-19
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Abbott Laboratories | $738 |
| ABIOMED | $260 |
| Edwards Lifesciences Corporation | $188 |
| Boston Scientific Corporation | $138 |
| Amgen Inc. | $130 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-04-29
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20100429000903 | I | Cardiovascular Disease (Cardiology) | TX | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 292 | 94 | $0 |
| 93750 | Evaluation of lower heart chamber assist device | 116 | 36 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 113 | 57 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 65 | 45 | $0 |
| 99238 | Hospital discharge day management, 30 minutes or less | 36 | 35 | $0 |
Insurance plans in this area (ZIP 77030)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Emergency Medicine | IL | |
| Anesthesiology, Critical Care (Intensivists) | TX | |
| A N E S T H E S I O L O G Y | TX | |
| - | TX | |
| Diagnostic Radiology | TX | |
| Physician Assistant | TX | |
| Certified Nurse Midwife (Cnm) | TX | |
| O T O L A R Y N G O L O G Y | TX | |
| Physician Assistant | TX | |
| Physician Assistant | TX |
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